Home / 12,336.52-18,504.78-7,139.56

Finding the Fourth Proportional to 12,336.52, 18,504.78 and 7,139.56

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Solution

The fourth proportional to 12,336.52, 18,504.78 and 7,139.56 is: 10,709.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,336.52 : 18,504.78 = 7,139.56 : x
  2. Step 2: Convert to fraction form
    12,336.52/18,504.78 = 7,139.56/x
  3. Step 3: Cross multiply
    12,336.52x = 18,504.78 × 7,139.56
  4. Step 4: Simplify right side
    12,336.52x = 132,115,987.10
  5. Step 5: Solve for x
    x = 132,115,987.10/12,336.52
  6. Step 6: Final answer
    x = 10,709.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.